Convective effect on the solidification of hypermonotectic alloys

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	Convective effect on the solidification of hypermonotectic alloys; Convective effect on the solidification of hypermonotectic alloys
	H. L. Li; J. Z. Zhao
	2011 ; 2011
发表期刊	Journal of Materials Research ; Journal of Materials Research
ISSN	0884-2914 ; 0884-2914
卷号	26 期号:6 页码:832-836
摘要	A model is developed to analyze the microstructure evolution in a continuously solidified hypermonotectic alloy. The model takes into account the common actions of the nucleation and diffusional growth/shrinkage of the minority phase droplets, the spatial phase segregation, and the convections of the melt. The microstructure formation in a continuously solidified hypermonotectic alloy is calculated. The numerical results demonstrate that the convections have great effect on the microstructure formation. The convective flow against the solidification direction causes an increase in the nucleation rate while the convective flow along the solidification direction causes a decrease in the nucleation rate of the minority phase droplets. The convections lead to a more nonuniform distribution of the minority phase droplets in the melt. It causes an increase in the size of the largest minority phase droplets and is against the obtaining of the hypermonotectic alloys with a well-dispersed microstructure.; A model is developed to analyze the microstructure evolution in a continuously solidified hypermonotectic alloy. The model takes into account the common actions of the nucleation and diffusional growth/shrinkage of the minority phase droplets, the spatial phase segregation, and the convections of the melt. The microstructure formation in a continuously solidified hypermonotectic alloy is calculated. The numerical results demonstrate that the convections have great effect on the microstructure formation. The convective flow against the solidification direction causes an increase in the nucleation rate while the convective flow along the solidification direction causes a decrease in the nucleation rate of the minority phase droplets. The convections lead to a more nonuniform distribution of the minority phase droplets in the melt. It causes an increase in the size of the largest minority phase droplets and is against the obtaining of the hypermonotectic alloys with a well-dispersed microstructure.
部门归属	[zhao, jiuzhou] chinese acad sci, inst met res, shenyang 110016, peoples r china. [li, haili] shenyang ligong univ, shenyang 110159, peoples r china.;zhao, jz (reprint author), chinese acad sci, inst met res, shenyang 110016, peoples r china;jzzhao@imr.ac.cn ; [zhao, jiuzhou] chinese acad sci, inst met res, shenyang 110016, peoples r china. [li, haili] shenyang ligong univ, shenyang 110159, peoples r china.;zhao, jz (reprint author), chinese acad sci, inst met res, shenyang 110016, peoples r china;jzzhao@imr.ac.cn
关键词	Microstructure Evolution Microstructure Evolution Immiscible Alloys Immiscible Alloys Miscibility Gap Miscibility Gap Droplets Droplets
URL	查看原文 ; 查看原文
WOS记录号	WOS:000292826200014 ; WOS:000292826200014
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/30462
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	H. L. Li,J. Z. Zhao. Convective effect on the solidification of hypermonotectic alloys, Convective effect on the solidification of hypermonotectic alloys[J]. Journal of Materials Research, Journal of Materials Research,2011, 2011,26, 26(6):832-836, 832-836.
APA	H. L. Li,&J. Z. Zhao.(2011).Convective effect on the solidification of hypermonotectic alloys.Journal of Materials Research,26(6),832-836.
MLA	H. L. Li,et al."Convective effect on the solidification of hypermonotectic alloys".Journal of Materials Research 26.6(2011):832-836.